python 操作mysql数据中fetchone()和fetchall()方式

{'ys4ng35toofdviy9ce0pn1uxw2x7trjb':'娱乐',
  'vekgqjtw3ax20udsniycjv1hdsa7t4oz':'经济',
  'vjzy0fobzgxkcnlbrsduhp47f8pxcoaj':'军事',
  'uamwbfqlxo7bu0warx6vkhefigkhtoz3':'政治',
  'lyr1hbrnmg9qzvwuzlk5fas7v628jiqx':'文化',
 }

import string
import random
 
def get_code():
 return ''.join(random.sample(string.ascii_letters + string.digits + string.punctuation, 32))
print(get_code())
 
def get_code1():
 return ''.join(random.sample(string.ascii_letters + string.digits, 32))
testresult= get_code1()
print(testresult.lower())
print(type(testresult))

)@+t37/b|UQ[K;!spj<(>%r9"PokwTe=
igwle98kgqtcprke7byvq12xnhucmz4v
<class 'str'>

import pymysql
import pandas as pd
 
conn = pymysql.Connect(host="127.0.0.1",port=3306,user="root",password="123456",charset="utf8",db="sql_prac")
 
cur = conn.cursor()
print("连接成功")
sql = "SELECT type_code,count(1) as num FROM test GROUP BY type_code ORDER BY num desc"
 
cur.execute(sql)
res = cur.fetchall()
print(res)

dicts = {'ys4ng35toofdviy9ce0pn1uxw2x7trjb':'娱乐',
  'vekgqjtw3ax20udsniycjv1hdsa7t4oz':'经济',
  'vjzy0fobzgxkcnlbrsduhp47f8pxcoaj':'军事',
  'uamwbfqlxo7bu0warx6vkhefigkhtoz3':'政治',
  'lyr1hbrnmg9qzvwuzlk5fas7v628jiqx':'文化',
  }
res['name'] = res['name'].map(lambda x:dicts[x] if x in dicts else x)
print(res)

 name value
0 娱乐  8
1 经济  5
2 军事  3
3 政治  3
4 娱乐  2
5 文化  1
6 政治  1
7 经济  1
8 军事  1
9 文化  1

#分组统计
result = res.groupby(['name']).sum().reset_index()
print(result)

 name value
0 军事  4
1 娱乐  10
2 政治  4
3 文化  2
4 经济  6

 name value
1 娱乐  10
4 经济  6
0 军事  4
2 政治  4
3 文化  2

#输出为list，前端需要的数据格式
data_dict = result.to_dict(orient='records')
print(data_dict)

import pymysql
import pandas as pd
 
conn = pymysql.Connect(host="127.0.0.1",port=3306,user="root",password="123456",charset="utf8",db="sql_prac")
 
cur = conn.cursor()
print("连接成功")
sql = "select count(case when type_code in ('ys4ng35toofdviy9ce0pn1uxw2x7trjb','娱乐') then 1 end) 娱乐," \
  "count(case when type_code in ('vekgqjtw3ax20udsniycjv1hdsa7t4oz','经济') then 1 end) 经济," \
  "count(case when type_code in ('vjzy0fobzgxkcnlbrsduhp47f8pxcoaj','军事') then 1 end) 军事," \
  "count(case when type_code in ('uamwbfqlxo7bu0warx6vkhefigkhtoz3' ,'政治') then 1 end) 政治," \
  "count(case when type_code in ('lyr1hbrnmg9qzvwuzlk5fas7v628jiqx','文化') then 1 end) 文化 from test"
cur.execute(sql)
res = cur.fetchone()
print(res)

data = [
    {"name": "娱乐", "value": res[0]},
    {"name": "经济", "value": res[1]},
    {"name": "军事", "value": res[2]},
    {"name": "政治", "value": res[3]},
    {"name": "文化", "value": res[4]}
]
result = sorted(data, key=lambda x: x['value'], reverse=True)
print(result)